After testing and playing around with C3, here is my second impression.
I work on a Celeron N3050 (8GB ram, 850gb SSD and Intel graphics) laptop with Linux Mint, and Construct 3 feels laggy to me. I compared Godot with C3 in Chrome, and opened the Kiwi platformer project in C3, and a much more complex project (Diasporic Crypt, a Castlevania clone! See github.com/Algorithmus/DiasporicCrypt) in Godot.
Construct 3:
+ double-clicking a layout takes 1/3-1/2 a second to register and open. When I open the enemies script sheet, the screen displays "LOADING" for a second, and then displays it.
+ switching between loaded tabs takes again a 1/3-1/2 second to register and display.
+ loading a level layout takes a second, and often the level elements take another second to display/load first time around. Switching between open layout tabs again isn't quite as direct as I am used to in my other applications.
+ dragging the split borders to widen the properties or objects panel is terribly laggy and slow when a slightly longer script is open in the main view. For example, when I open the enemies script sheet, and drag the border, the screen updates becomes almost unbearably cumbersome.
+ all clicks take a split second to register and execute. Some respond acceptably fast: when I select an event it feels snappy enough. But many other things take just slightly too long to execute for my taste. Double-clicking an event to edit it takes again a split second, and feels not as responsive as I would expect from an application.
+ previewing projects works fine. Editing is, however, not snappy enough.
I compared with Godot, and I opened the Diasporic Crypt, which takes five seconds to load. After loading, everything feels snappy - much snappier than Construct 3. Clicking things feels more responsive and direct.
What bothers me is that Diasporic Crypt is a much more complex game, but also uses high resolution graphics, with a wide variety of animations and assets. Construct 3's Kiwi demo game is a relatively simple game compared. Yet C3 in Chrome feels somewhat unresponsive, and Godot remains snappy while working.
I tested both also on my older Windows 7 i5cgu@1.33ghz 4GB machine that I still use for Visionaire. Again Godot feels snappier, and working with Construct 3 in Chrome is slower. I noticed that Kiwi plays slow in the browser, while previewing Diasporic Crypt runs quite smooth. And previewing in Godot slows down the game compared to compiling it as a standalone game, so...
Anyway, Construct 3 is too slow for comfortable working for me in its current state. I had hoped for better performance on my newer Linux machine. Godot works fine in comparison. Well, I wasn't surprised, really. Chrome is an extra layer that slows things down, of course.
And the Kiwi game lagged on the slower i5 machine, while Diasporic Crypt ran satisfactory - so I believe Construct games wouldn't run very well on machines with lesser specs (I read in threads here that NW.js doesn't help to improve the desktop performance?). That would limit my audience on Windows to users with higher specs.
I did like the script sheets in Construct. But after testing, I think Godot is a better fit for me and my Minty Machine <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":-)" title="Smile" />