Going above this causes mayhem on my 3990x.
Given that this is pretty much top end hardware, I don't think anything else in existance could cope with more than 100.

Change-Id: I8b6e4ad09312655c59084aaf5185bb99ee459bdb
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/44016Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>