I have a feeling that this is related to https://www.scirra.com/tutorials/67/del ... ence#h2a12 See Minimum framerate section?
[quote:34uxwuj4]At very low framerates, dt can become very large. For example, at 5 FPS, dt is 0.2. An object moving at 500 pixels per second is therefore moving 100 pixels per tick. This can cause it to "teleport" through walls or miss collisions with other objects.
Games are usually unplayable at such low framerates, but it is even worse if they become unstable like that. To help the game stay reliable even at very low framerates, Construct 2 does not let dt get larger than 1/30 (about 0.033). In other words, below 30 FPS, dt stays at 0.033. This does also mean below 30 FPS the game starts going in to a slow-motion effect (described earlier as one of the issues of framerate dependent games), however this is usually a better result than the "teleporting objects" problem.
If you want to set a different limit to 1/30, you can use the system action Set minimum framerate.
For your case, I believe that the game runs fast enough, but since you mentioned the enemy move faster, I have a feeling that they might be moving so fast that they just "teleport" through the walls. Could you see whether this is indeed the case?
For Screen Capture, you can use Snipping Tool. Windows should come with it. But I believe video capturing might be needed more in this case?