Shortly: Proxy files are HUGE.
So, yesterday I was editing a gaming video with HitFilm Express 2017. Editing was really slow and laggy. I decided to make a Proxy of all the video material (30min facecam 1080@25 and 30min gameplay 1080@60). I left it proxying for the whole night.
I have installed HitFilm into my 250GB SSD (with Windows and programs).
In the morning, the proxying of my facecam material was complete but the gameplay had stopped due to an Error 36. I started proxying the gameplay again for my school day. When I came home, it said again "Error 36". I gave up with proxying the gameplay and continued with editing. Later, I decided to see how much there's space left on my SSD.
I was really confused because last I checked, it said 178GB. I went through all my folders and finally found the problem from C:\Users\Name\AppData\Local\FXHOME\HitFilm Express 2017\Proxies. I deleted all the Proxies and searched a way to change the Proxy folder destination. It is found at File > Options > Proxy > Media Directory.
If you have separate SSD and HDD, I recommend you to move the Proxy directory to your HDD and/or delete your Proxies when you don't need them anymore. Also, you can limit the size of your Proxy directory.
I just wanted to share this experience with you guys to prevent people from killing their SSDs.