I love the Raiden series of games.

This collection is ... just awful.

The games are all running too fast. Ridiculous. Wish I could get my money back :(

GOG has a 30 Day Money Back Guarantee for games being unplayable due to technical issues etc. so if you're still within that time period you could try contacting support for help with this.

This topic covers a workaround for slowing the game down but I don't know how well it works (the game runs OK on my system).

Thanks.
Well it runs...'ok'. It's just that it runs too fast. About 10% too fast. I re-installed and didn't patch. Worked better but I miss out on the patch stuff.