Prevent AltGr from producing upper case letters

Question

I have a German keyboard layout, so when I type something like AltGr + ß I get a \. However, when I type e.g. AltGr + g, I get a G. This can be quite annoying, as in LaTeX, this has the effect that I frequently type stuff like \Gamma, instead of \gamma.

Can the behaviour of AltGr be changed, so that it doesn't produce uppercase letters anymore, without disabling the "third level" effect?

I use Windows 10 with the Language "English (Germany) - German".

Answer 1

As suggested by harrymc, using MSKLC solves the issue: one can simply set it up in a way, that AltGr + a letter, e.g. g results in a g.