I kept the graphics on fast in my video settings, but still my leaves are fancy.

Also appear to be having this issue. Have checked the "chlorine-client.toml" file through notepad to see if there's a possible way to change the leaves (or graphics settings). Unfortunately found nothing...

Also, I think it's best to show what mods are installed, just in case ONE of them may be a cause for this issue.

For my case, refer to the image below...

I did install a few mods, but removed all of them and only installed Chlorine to see if anything was conflicting but even though I removed all the mods except chlorine, I am facing the same problem.

You need to change it inside of the config file of chlorine

I did try the config file, but that did nothing.