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Guys, I've updated the OP and added a tactic that I recommend to use if you play the game with "Instant Result" option
DOWNLOAD THE TACTIC -->TFF INSTANT RESULT (SUNFIRE) V2
I've found that when you use "Instant Result" option then your assistant manager might tweak some roles/duties in your tactic if he thinks something else would be more appropriate and the less rating some player has for some role in your tactic the more chances that your assistant manager will change it when you use "Instant Result".
Here's some example. At the screenshot you might see that Vincenzo Grifo has a low rating for "Wide Midfielder" role and a high rating for "Wide Playmaker" role:
There's a huge issue in FM that your assistant manager wasn't coded to recognize any PIs/TIs tweaks that were made and all generic roles in your tactic such as Wide Midfielders/Central Midfielders/Attacking Midfielders/Full Backs and all these roles always have a very low rating "in eyes" of your assistant manager and any other "specialist" role always have higher rating for your assistant manager.
As you can see there are were many generic roles in SUNFIRE tactic and when you use "Instant Result" there's a big probability that your assistant manager will change roles for some positions but I found that if you set "Automatic" duty for some generic roles in the tactic then your assistant manger stops change their roles when you use “Instant Result”.
So I changed the duties for some important positions to "Automatic" and tweaked them to make as close as possible to what we have in the normal version of the tactic and to achieve that I had to change the TM from "Control” to "Attacking".
I'd say the instant result version of the tactic performs about 95% close to the normal version of the tactic.