Running live usb on 2 different PC's

I work with two desktop PCs of different configurations(one at home and other at school). I made a live usb with persistence using ubuntu 19.10 so that I can operate on both Pcs with common applications installed in the persistent usb folder. I used a usb 2.0 to make the live usb. I find that the speed of booting and general speed to be sluggish. I have two doubts as follows:

1. Will creating a live usb with usb 3.0 improve general speed significantly? Both my PCs have usb 3.0 ports
2. Is there a better alternative to live usb with persistence for my application. All I want is to run a usb bootable Ubuntu with some common applications on both the PCs. I do not have an internet connection in my school PC, so I update the required applications using my home PC which has net connection. That is why I went for live usb-persistence mode

Solution 1:

Full Install USB vs Persistent install

A Full install USB and a Persistent install USB both save data and installed programs after reboot.

Comparison between Persistent and Full install USB

Advantages of a persistent install:

1. You can use the persistent pendrive to install Ubuntu to another computer.

2. A persistent install takes up less space on the pendrive.

3. You can reset the pendrive by overwriting the old casper-rw file with a new one.

4. The install to pendrive takes less time.

Advantages of a Full install:

1. You can update and upgrade.

2. If you have problems or wish to modify, the solution is the same as with an internal install, (You can ask for help in these forums).

3. No ugly startup / install screen.

4. Better security, you can use full encryption

5. You can use proprietary drivers.

6. Hibernation works.

7. A persistent install is limited to a 4GB casper-rw and a 4GB home-rw persistence file, to get more persistence requires persistence partitions. Once casper-rw is full, the drive will not boot. YUMI and Universal can use persistent files greater than 4GB when installed on a NTFS partition and in BIOS mode. Ventoy can also use persistent files larger than 4GB.

8. Faster boot.

9. You can run VBox and use virtual machines.

Note that once booted, both methods run at about the same speed.

Full Install Method

One method for creating Full install USB: How to Create a Full Install of Ubuntu 20.04 to USB Device Step by Step