the only time i had problems with C2 having problems loading files or after a while to get sluggish, is when i was doing very weird and large event sheets, or have over 500 objects in the editor... while you are using C2, is there a chance that in those 10-15 minutes to add to many stuff in the visual editor? and maybe have like 1 event sheet that contains a very big amount of actions in it? like above 200? 500 ? and all on same condition like OnStartOfLayout lets say? even if its not running if you copy to many actions into 1 conditions, when youl open that project youl experience a very slow editor mode performance.... and for the objects in the editor, i think its more about the GPU not being updated... but if those are not your problem... then it might be a bug caught with ur last installation if you interrupted it, or reinstalled it wrong something might happen... i dont know really ... just saying hope it helps you
Thank you for your reply gamecorpstudio. I actually only have three event sheets within the project. Two of these are empty but both include the third event sheet, which has 56 events in it, and about three times more subevents (with actions). The eventsheet is is created for character movement as well as Keyboard-, touch- and gamepad controls. (with a couple of extra things for run-toggle, wall-jump etc)
It really doesn't matter which layout I have active, this sluggishness happen anyway. It can get sluggish even if I don't interact with the level editor or add items. At the time being I use a maximum of ~200 graphical instances per layout, and a total of 111 graphical objects within the whole project.
I started a new project. Zero events within the event sheet, added about 5 graphical objects, 25 instances of these objects on two layers. I timed the issue and it took 18 minutes. same thing. The only difference now was that it wasn't a two-stage phenomena, it went from silky smooth to almost a complete application freeze. (I was able to save and close, but it took a couple of minutes). Task manager tells me 0% CPU 137,9MB of Memory usage, 0,1MB/s of disk-writes (that's a bit odd, but Steam is showing the same amount of disk writes).
I will try on my desktop computer when I get home in about two days, and see what I can find. I will install a fresh "free" version of Construct 2 tonight on the laptop, and see if I can come across the same problem with a different license. I will install Construct on a third system this evening as well. A Pentium G3220 with Radeon 7870.
I usually upgrade to the latest graphics drivers, and in light of this, the issue has been ongoing for several months and over several iterations of graphics drivers and Construct 2 versions. (I haven't used Construct that much, I am currently focusing on creating graphical assets, but I use the engine to see how everything fit together visually).
I really love the way Construct 2 works, but this issue is killing my creative spark.