Works for me.

Can you run tick() function in 10ms frequency?

BarPeriod = 1;
TickTime = -10;

It doesn't work (even for a one asset).

Yes. The attached script works just fine in the release candidate. Also attached is the log.

I found brokerCommand GET_MAXREQUESTS limits tick() function call.

Is this a bug?

No. Obviously the time between ticks cannot be shorter than a broker API request.

Just noticed that Zorro was flagged as malware on a system scan - I don't believe I ever saw this notification with 2.30 however I now have 2.35 installed so wonder if something in this area has changed - seems there are also some other anti-virus programs that flag this too?

In this area nothing has changed. It happens all the time that a program gets flagged.

If in doubt, check with Microsoft defender - it's relatively reliable and has relatively few false alarms. For being on the safe side, run a malware scan. Not that your PC was really infected and has then infected your Zorro copy.

- New version 2.35.7: http://opserver.de/down/Zorro_235.exe

Fixed: The options multiplier was negative when set from the asset list.

Since no new problems were reported so far, 2.35 now became the official release and is available on the download page.

It seems that oversampling does not work in 2.35.7
Added NumSampleCycles=3; to workshop 6 and nothing happen in training (same training time) and test run are equal.
Same behavior with different script

Downgraded to previous stable version and it works as expected.
Ciao