Add blur parameter to CRT settings #305

Job	Run time
build (windows-latest, Debug, gcc)	3m 52s
build (windows-latest, Release, gcc)	6m 11s
build (ubuntu-24.04-arm, Release, clang)	2m 9s
build (ubuntu-latest, Debug, clang)	1m 43s
build (ubuntu-latest, Debug, gcc)	1m 38s
build (ubuntu-latest, Release, clang)	2m 18s
build (ubuntu-latest, Release, gcc)	2m 19s
build (ubuntu-24.04-arm, Debug, clang)	1m 50s
release	18s
	22m 18s

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