Remove the watermark tightness option since it’s obsolete now.
Changed the LogWindow background colour back to black for Linux and Windows.
Disabled the paired single sum instruction (ps_sum) as it is causing
the black screen in Sonic Colours. Both JIT and JITIL have this work-around.
Re-enabled ps_mul as that instruction was not the root cause.
HLE_IPC_BuildFilename was actually ignoring the size argument. Fixes «/tmp/sys» error.
Disabled the paired single multiply instruction (ps_mul) in JIT as it is causing the black screen in Sonic Colours. JITIL has a different bug as disabling ps_mul in JITIL did not help the issue.