Sometimes the game becomes very unresponsive:

• after shooting at point blank range the bullet will hit much later (0.5-1s)
• same issue with melee attacks connecting very late
• using number keys might have a delay of several seconds or might not respond at all
• jumping/changing stance will often not respond or have a huge delay attached to it
• eating or drinking will play the animation and then go into an "idle state" of several seconds before applying the boni (you cannot eat/drink during this period)