"Cache size" field not showing up in system settings?

[Silver]

I have a problem where AviUtl freezes every time I edit a large project file. To fix this, I'm attempting to allocate more memory to AviUtl through the system settings, but the field isn't there for some reason; it's replaced with "Frames to Cache." What I'm looking for is a "Cache Size" box with an option to change the number of megabytes.

What I'm looking for is in this tutorial on this website:
https://jisyu-seisaku.net/archives/640
(translated: https://jisyu--seisaku-net.translate.goog/archives/640?_x_tr_sl=auto&_x_tr_tl=en&_x_tr...hl=en-US#toc19)

[Attachment 72362 - Click to enlarge]
It seems like this Japanese version of AviUtl has a cache size field, but I can't find it in mine.

I'm using the Extra Pack 1.14 version from this website. Any ideas what's going on, or how I could stop freezing in a different way?

[johns0]

How much ram do you have available?