On 2023-03-04 11:22, Jon Hylands via Cuis-dev wrote: > I grabbed the 'squeak.stack.spur_linux64x64.tar.gz' file, Note that this is the slower bytecode interpreter VM. You should get the _COG_ variant, which has a JIT compiler. Look for `squeak.cog.spur` prefix. HTH, -KenD