Lag and crashing on private server since 1.14 pillager update

Game on server lags and eventually crashes.  15 man server and only 3 on at the time of crashes.  I am providing the event log of the latest crash, but this has been ongoing since the update was loaded.  This seems to be the most common message I am getting:  java.lang.StackOverflowError

 

 -0f7f-4808-842b-59effd874fc0
[23:35:32] [Server thread/INFO]: Romulus1997 lost connection: Disconnected
[23:35:32] [Server thread/INFO]: Romulus1997 left the game
[23:35:39] User Authenticator #3/INFO: UUID of player Romulus1997 is 21937514-c22d-44ca-a1a8-8cf90d6b06f9
[23:35:39] [Server thread/INFO]: Romulus1997[/102.249.207.168:49529] logged in with entity id 9490 at (-3799.8399122705086, 69.0, -13185.154569581673)
[23:35:39] [Server thread/INFO]: Romulus1997 joined the game
[23:35:40] [Server thread/INFO]: Romulus1997 lost connection: Disconnected
[23:35:40] [Server thread/INFO]: Romulus1997 left the game
[23:36:42] User Authenticator #4/INFO: UUID of player Dunk77 is e474511b-1b36-4d05-895d-e572b2ffdf5f
[23:36:42] [Server thread/INFO]: Dunk77[/67.160.16.255:60473] logged in with entity id 9535 at (-3867.1948067482867, 21.0, -13314.792146422451)
[23:36:42] [Server thread/INFO]: Dunk77 joined the game
[23:36:47] User Authenticator #5/INFO: UUID of player Romulus1997 is 21937514-c22d-44ca-a1a8-8cf90d6b06f9
[23:36:47] [Server thread/INFO]: Romulus1997[/102.249.207.168:49569] logged in with entity id 10032 at (-3799.8399122705086, 69.0, -13185.154569581673)
[23:36:47] [Server thread/INFO]: Romulus1997 joined the game
[23:37:18] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2414ms or 48 ticks behind
[23:39:31] [Server thread/INFO]: <Romulus1997> hello
[23:39:36] [Server thread/INFO]: <Dunk77> seems better now.
[23:39:47] [Server thread/INFO]: <Dunk77> maybe it is just Blu.. hahaha
[23:40:03] [Server thread/INFO]: <Romulus1997> i this it bugs out when 3 of us are on
[23:40:42] [Server thread/INFO]: <Dunk77> well one of the problems I saw on the bug list is mobs spawning/despawning too quickly over the map
[23:40:43] [Server thread/INFO]: <Romulus1997> my horse i was riding just dissapred when i came back on and he is gone now
[23:41:13] [Server thread/INFO]: <Dunk77> it is probably back someplace. retrace your path.
[23:41:37] [Server thread/INFO]: <Romulus1997> i did. i looked all over. he is gone
[23:41:45] [Server thread/INFO]: <Dunk77> the server can't keep up with all the mobs spawning/despawning.
[23:41:58] [Server thread/INFO]: <Dunk77> stupid microsoft.
[23:42:20] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2227ms or 44 ticks behind
[23:42:34] [Server thread/INFO]: <Romulus1997> heah
[23:42:35] User Authenticator #6/INFO: UUID of player Blubirrd is 5d55f16b-e61c-45a5-a242-79e2e74616b4
[23:42:35] [Server thread/INFO]: Blubirrd[/155.254.115.67:5142] logged in with entity id 22386 at (-3305.847615049419, 75.0, -2003.6173641940377)
[23:42:35] [Server thread/INFO]: Blubirrd joined the game
[23:42:39] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 3219ms or 64 ticks behind
[23:42:51] [Server thread/INFO]: <Dunk77> here comes the lag queen! lol.............
[23:43:10] [Server thread/INFO]: <Blubirrd> hey! i resemble that remark!
[23:43:16] [Server thread/INFO]: <Dunk77> lol.
[23:43:19] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 25056ms or 501 ticks behind
[23:44:02] [Server thread/INFO]: <Dunk77> like I was telling Rom, one of the bugs reported was mobs spawning/despawning too quickly over the map. they had the same problem after the last update
[23:44:04] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 30195ms or 603 ticks behind
[23:44:51] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 32224ms or 644 ticks behind
[23:45:38] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 32520ms or 650 ticks behind
[23:46:25] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 31801ms or 636 ticks behind
[23:47:18] [Server thread/INFO]: <Dunk77> I'm gonna log off for a bit. see if it gets better without me.
[23:47:18] [Server thread/INFO]: [@: Teleported Blubirrd to -3478.5, 72.0, -13148.5]
[23:47:18] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 37451ms or 749 ticks behind
[23:47:26] [Server thread/INFO]: <Romulus1997> no
[23:47:30] [Server thread/INFO]: <Romulus1997> its ok now
[23:47:45] [Server thread/INFO]: <Blubirrd> i was in the desert lol, i've returned
[23:47:51] [Server thread/INFO]: <Dunk77> well, I got mouths to feed before they start nibbling on me.
[23:47:58] [Server thread/INFO]: <Romulus1997> lol
[23:48:01] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 28178ms or 563 ticks behind
[23:48:06] [Server thread/INFO]: <Dunk77> be back in a bit
[23:48:09] [Server thread/INFO]: <Blubirrd> cya then lol
[23:48:11] [Server thread/INFO]: Dunk77 lost connection: Disconnected
[23:48:11] [Server thread/INFO]: Dunk77 left the game
[23:48:13] [Server thread/INFO]: <Romulus1997> see you
[23:48:27] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 10743ms or 214 ticks behind
[23:51:14] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2129ms or 42 ticks behind
[23:58:28] [Server thread/INFO]: [@: Teleported Romulus1997 to -3051.5, 65.0, -1257.5]
[00:00:15] [Server thread/INFO]: [@: Teleported Blubirrd to -3051.5, 65.0, -1257.5]
[00:00:17] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2045ms or 40 ticks behind
[00:03:03] [Server thread/INFO]: Automatic saving is now disabled
[00:03:03] [Server thread/INFO]: Saving the game (this may take a moment!)
[00:03:04] [Server thread/INFO]: Saved the game
[00:03:44] [Server thread/INFO]: Automatic saving is now enabled
[00:06:18] [Server thread/WARN]: Romulus1997 moved too quickly! -2.050135892848175,0.0,9.902583564606857
[00:06:19] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2894ms or 57 ticks behind
[00:08:21] [Server thread/WARN]: Fetching addPacket for removed entity
[00:09:47] [Server thread/WARN]: Fetching addPacket for removed entity
[00:14:08] [Server thread/WARN]: Fetching addPacket for removed entity
[00:16:21] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2254ms or 45 ticks behind
[00:16:29] [Server thread/WARN]: Fetching addPacket for removed entity
[00:16:29] [Server thread/WARN]: Fetching addPacket for removed entity
[00:16:34] [Server thread/INFO]: [@: Teleported Romulus1997 to -3478.5, 72.0, -13148.5]
[00:16:39] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 3460ms or 69 ticks behind
[00:16:58] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 3527ms or 70 ticks behind
[00:18:21] [Server thread/INFO]: [@: Teleported Blubirrd to -3478.5, 72.0, -13148.5]
[00:18:25] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2406ms or 48 ticks behind
[00:21:33] [Server thread/WARN]: Blubirrd moved too quickly! 0.1661197662874656,0.0,-10.059883168203669
[00:21:33] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 3290ms or 65 ticks behind
[00:40:33] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2003ms or 40 ticks behind
[00:53:35] User Authenticator #7/INFO: UUID of player Dunk77 is e474511b-1b36-4d05-895d-e572b2ffdf5f
[00:53:35] [Server thread/INFO]: Dunk77[/67.160.16.255:61555] logged in with entity id 300915 at (-3872.8774038934166, 30.0, -13313.37620258308)
[00:53:35] [Server thread/INFO]: Dunk77 joined the game
[00:53:37] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2215ms or 44 ticks behind
[00:53:44] [Server thread/INFO]: <Romulus1997> WELCOME BACK
[00:53:46] [Server thread/INFO]: <Blubirrd> wb!
[00:53:59] [Server thread/INFO]: <Dunk77> thnx! any more issues?
[00:54:09] [Server thread/INFO]: <Romulus1997> not yet
[00:54:10] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 17984ms or 359 ticks behind
[00:54:19] [Server thread/INFO]: <Blubirrd> the usual chunks loading in late
[00:54:48] [Server thread/INFO]: <Dunk77> it will only take them a month or two to fix that. lol
[00:55:05] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 39482ms or 789 ticks behind
[00:55:14] [Server thread/INFO]: <Blubirrd> i got 2 gorgeous kitties! the spawn vill is full of them
[00:55:27] [Server thread/WARN]: Romulus1997 moved too quickly! -10.147454831830146,0.0,0.31852166786666203
[00:56:19] [Server Watchdog/FATAL]: A single server tick took 60.00 seconds (should be max 0.05)
[00:56:19] [Server Watchdog/FATAL]: Considering it to be crashed, server will forcibly shutdown.
[00:56:19] [Server Watchdog/ERROR]: This crash report has been saved to: /servers/sfod/minecraft/./crash-reports/crash-2019-04-27_00.56.19-server.txt
[00:56:20] [Server thread/INFO]: Stopping server
[00:56:20] [Server thread/INFO]: Saving players
[00:56:20] [Server thread/INFO]: Blubirrd lost connection: Internal Exception: java.lang.StackOverflowError
[00:56:20] [Server thread/INFO]: Blubirrd left the game
[00:56:20] [Server thread/INFO]: Saving worlds
[00:56:20] [Server thread/INFO]: Saving chunks for level 'world2'/minecraft:the_nether
[00:56:20] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[00:56:20] [Server thread/INFO]: Saving chunks for level 'world2'/minecraft:the_end
[00:56:20] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[00:56:20] [Server thread/INFO]: Saving chunks for level 'world2'/minecraft:overworld
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (world2): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (world2): All chunks are saved
[00:56:25] [Server thread/INFO]: ThreadedAnvilChunkStorage (world2): All chunks are saved