If it gives an error, how exactly did that lead you to the conclusion that the game can support larger maps? As far as I can see that only means the editor supports larger maps
Uhh... no. RA's megamaps are an officially added feature, and as far as I know, it required a ton of the internals to be changed. All building foundation definitions use a wraparound value equal to the maximum map width to indicate which of its cells are on the next "line" on the map. Every single one of those had to be changed for the megamaps feature.
If they actually defined that as constant in their source code and just used that constant in their foundation definitions, that means that to them that was a single value change. But once compiled those get calculated and stored as the final value, so to hack in the same thing, every single one of these values has to be adapted.
Does it also happen when you play in window mode?
I had freezing too when I updated to windows 10, but it wasn't related to the game, it happened outside the game too sometimes while browsing the web. For the it was caused by outdated drivers.
You could try to update your drivers, it's a good thing to have the latest ones anyways. I used the tool from intel: https://downloadcenter.intel.com/download/24345/Intel-Driver-Update-Utility
yes but i was trying to find out if actually we could start game with map higher than 128x128 any help appreciated,just for science and some fun because if we find way to extend unit limits we could make bigger gamesas far as now i figurd out that game could support the larger maps only problem is with map itself game says that there is error in map file or something even aftr map editor save map succefully. parser issue?