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I tested 100 which seemed to reduce to 25 fps so tried everything down to 60 which is the only one that worked for me, so start off with 60 and work your way up. Even if your server never reported above 50 before this will help and give you an extra 10-15 fps for your server. Example mine always sat at 47-48 fps but now its sitting between 59-60. Just thought I would share my results.