I used to have this problem in bigger battles when the parties started fighting eachother. I had this problem in another mod (Perisno) but I think this fix might work equally well for you. WIth the specs I have lag shouldn't be a problem so I knew something was up.
What I had to do was to go to the Mount and Blade Warband folder in your documents folder and within that you should find a file called rgl_config. It might be hidden if you can't find it here. If that's the case you might find luck by searching for it in your windows bar.
When you find the file open it and within navigate until you find this: render_buffer_size:
This will probably be set to 15 or something of the sort if you haven't mucked about with it before. Try changing it to something arbitrary like 10000. Save and that should work.
I'll paste what was written in another thread concerning render_buffer_size
"The text file does hold a lot of Warband settings, (including battle size), but I never noticed the render_buffer_size entry.
I am not too sure what the 15 is in actual buffer size, it is very likely a modifier like the battle sizer, (1 = 150), so it would be good if TheAnyKey could play around with it to find a sweet spot. 10,000 may be giving improvement, but if 15 is a modifier, it could be 10,000 is helping but not optimum, maybe take it up in smaller steps in case 10,000 is outside the range of possible buffer size if you see what I mean."
Best of luck to you.
What I had to do was to go to the Mount and Blade Warband folder in your documents folder and within that you should find a file called rgl_config. It might be hidden if you can't find it here. If that's the case you might find luck by searching for it in your windows bar.
When you find the file open it and within navigate until you find this: render_buffer_size:
This will probably be set to 15 or something of the sort if you haven't mucked about with it before. Try changing it to something arbitrary like 10000. Save and that should work.
I'll paste what was written in another thread concerning render_buffer_size
"The text file does hold a lot of Warband settings, (including battle size), but I never noticed the render_buffer_size entry.
I am not too sure what the 15 is in actual buffer size, it is very likely a modifier like the battle sizer, (1 = 150), so it would be good if TheAnyKey could play around with it to find a sweet spot. 10,000 may be giving improvement, but if 15 is a modifier, it could be 10,000 is helping but not optimum, maybe take it up in smaller steps in case 10,000 is outside the range of possible buffer size if you see what I mean."
Best of luck to you.