I have been working with PLSQL Dev since 2005 or so and always showed off with my colleagues when it came to easy of use and performance compared to TOAD/SQLdev. Recently bought and installed v15 and it's a nightmare! I work with large datasets (EBS/HCM Cloud) and can really not afford to wait 5 to 10 seconds after every command. Please get this fixed Allround!

Update: I upgraded from v15.0.3.2059 (64bit) to 15.0.4.2064 (64bit) and the performance improved dramatically! It is back to normal again for me, very happy with that.

"I upgraded from v15.0.3"
I can corfirm, that the UI performance of the 15.0.4 version has useable performance. Not as fluid as it was before, but useable.

As I mentioned before in this thread application performance has improved after the v15.0.4.2064 release. But the issues that I started this thread for have not:
1) freezes are really a pain to deal with everyday.
2) Also the "initializing..." when changing tab connection
3) and "executing..." that doesn't go away unless I close the tab

I have made some suggestions in this thread about windows energy saving settings or oracle client incompatibilities etc being of influence, but have not seen or heard anything about this. Any ideas? Above issues are really frustrating and have been there fore quite a while...

15.0.4.2064 64-bit is still unusable for me. It takes extremely long to open a larger project. While opening that I get a screen "PL/SQL Developer 64 bit is not responding"
When it is finally open and I try to work there I very soon get a screen "PL/SQL Developer 64 has stopped working"
=> I rather stay still with version 14.