How fast you save files using 'save on trigger' is largely dependent on how high you have the samples turned up. Larger blocks of data slow the screen update. Here is a blurb on the sublect from my Pico Forum:
The "Save On Trigger" function is a vert powerful feature when trying to capture that elusive event.
Here are some tips about this feature for everyone:
Ever wished that you had captured that thing that just happened on your screen? If you use the "Save On trigger" option, you already did. Pico will write each triggered capture to the hard drive.
Select this feature from the "Settings" - "Trigger" dialog box.
Caution: It will save them all the last place a file was saved to. So, to avoid making a mess and so you can find where they went, make a special file for a run of these and save the first one using the "File" - "Save As" selection and direct it to that special location. Now they will all go there.
The default number of captures is 100. This is for your protection so you don't fill your hard drive with endless captures. These are not seamless captures but snapshots like from a motor drive camera.
If you desire more than 100 captures, you can increase it to any desired amount. You set the limit. The procedure is a bit clunky and requires you to edit an ini file, but here is what I suggest:
The default installation writes a section in the file "Win.ini" headed "[PicoScope for Windows]". The "Win.ini" file is located in the Windows directory. The settings are stored here. Ok, it scares me to edit a file like this with so many other things in it that affect my system. So, open the "Win.ini" file with Notepad and just copy the "[PicoScope for Windows]" section. Now close the "Win.ini" file making no changes. Now paste what you copied into Notepad and save as "PSW.ini" into yout main Pico folder. Pico will now use this file instead of the "Win.ini".
Now you can edit it and if you totally botch it you can just delete it and do over, not scary now
Now add this line:
"MaxSOTFiles=X" where "x" is the maximum number of files you want written to the drive during a save on trigger session. Save the file to the Pico folder as "PSW.ini" This should be automatic since you should have just saved it to begin with. Now, whenever you want to change the limit, just open the file change the number and save. That's it. I know, it seems like a pain but you only have to do all this once. Then it's simple. You just edit the "PSW.ini" in your Pico folder.
All this is in the Pico documentation under "Trigger Dialog".
Now you can start and stop the scope with the space bar, you don't have to watch the screen. You can watch the road.
Each screen, up the the limit, will be saved and you can review them later, stepping through them all with the "page up" and "page down" keys on the computer.
Now you can save thousands of screens if you desire. Just try to do that with brand x.