Works like a charm here, just tested it on a file 12.7 Mb, resaved the file with new name and was now on 7.49 Mb
I selected all except Layer's, the file is an original tcw, maybe that have something to do with it ?
V20, V21, 2015/ 16/ 17/ 18/ 19 Pro. Platinum
Deluxe 2015/ 16/ 19
Windows 10 Home Premium 64 bit, 32 GB
NVIDIA Geforce GTX 780m, 1 GB