Description of the standard terminology that is used to of TcpBufferSize , the memory consumption of Forefront TMG increases. Status: offline, W3PROXY Process Mem Usage keeps growing and I don't know if it's normal. I just read that the default cache memory used by ISA is 50 %. If you feel 50% is too high, you can change through the admin. Solved High Memory usage problem in task manager in Windows 10 in 4 steps: scan for virus and disable antivirus programs; disable. I am running SBS Premium with eschange on the same box. Server Specs are as follows - dual Xeon Ghz, 2 GB RAM, 1 x 36GB HHD.