Random Drops to 0 FPS

Up until recently my minecraft has been receiving serious lag spikes in which the game becomes unplayable. It can often freeze or just be around <1 FPS after about 2 minutes of gameplay. I have been playing on 1.11 but it also affects 1.12. I have uninstalled all resource packs and redownloaded minecraft itself. It happens regardless I have optifine or not. I shut down all other programs but still to no avail. This is increasingly frustrating as I would like to play the game but it wont co-operate. A speedy response would be appreaciated.