Version 188.8.131.52 has been reported to cause huge performance issues, hopefully 184.108.40.206 revision 2 has been just released fixing this performance issue.
If you had downloaded version 220.127.116.11 and had this performance issues please redownload it.
I'm really sorry for this incovinience.
P.S. : I also fixed the HOM glitch in classic doom games.