I can confidently tell you all.those issues you had reported on Note5 you will not face at all on Mate8
I had used the N5 before too and I rarely even faced those issues - definitely no data disconnect, signals had always been good ( on Celcom ), sudden freeze from idle never , n only very minor problems eg slight freeze while on some app but isn't critical
I don't install any system utility app, memory or battery managers, auto task killers n all my app from playstore. I rooted the phone n had installed xposed mod but uninstall as it only create some irritating issues

Wow 5 Note n yet you still stick on to it!!

After using my mate8, i hardly use my note 5 d. Can feel that note5 is so laggy and slow compared to mate8

Better wait for p9 plus.but price damm expensive

foto mana foto.. haha..

Many said Mate 8 won't be like Note 5. Later express some review k.

Go and claim a new set as is problematic

while on hold by hand no problem.. just on my bed will hard to touch.. cos the back is curve.. not flat..screen cannt get the pressure of touch i guess..

im using normal pasar malam tpu.. and just purchase nillkin tpu clear.. i like the cutting of nillkin..i purchase at lazada by Bdotcom bundle with temper glass for COD Rm60..
now currently using Nillkin Nature Tpu Clear.. can show out the body design and the unique colour of this phone..
even tpu get yellowish also not a problem..cos the body colour are looks like it.. haha.

It's because you already get used to Note 5 before bro.

Last week I went to Huawei store and compared my note 5 with mate 8 side by side. The screen of mate 8 was indeed less sensitive compared to Note 5. it's not that mate 8 was having issue on touchscreen. Note 5's touchscreen is simply more sensitive compared to other phone. So it might confused you and made you think mate 8 is not sensitive once you switched from Note 5.

I have tried many phones out there. I also bought a few different brands in past few years. I do find out that Samsung phone screen is more sensitive compared to the others. I guess they are using different pressure technology on their screen?

Anyway, use it for couple of days. You will get used to your new phone screentouch eventually. As long as you don't go back to note 5 la. If you still using both phones at the same time, you sure will always feel that note 5 is much sensitve.

I used lenovo P70A b4 this, it has a better batt life from what i observed. But mate 8 has a 6 inch lcd so it is still doing amazing job.
Cannot really compare the fuel consumption of a MPV and kancil.

Your phone must have tons of wakelocks
Mate 8 battery life is close to double that of Note5
Pretty similar is definitely incorrect

I'm using the spigen ultra hybrid.  The quality is quite good and solid.  Feel sturdy on hand.  The flip case is quite good and quality also not bad. But still find it troublesome with the flip case especially taking pics.
Using a tempered screen protector  now.  But already scratched less than a week usage. Went to the beach recently... I guess must be the sand.

spigen hybrid can get CoD at 89 by lazada..im waiting for ringke fusion

Using it naked .. and it feels good
might consider buying the skin from aliexpress later