Linux Mint 17.1 DS 2015 SP2 BETA running extremely slow

Hello,

I installed the beta version of DraftSight on my machine but I cannot work with it because the cursor is extremely slow. I worked with the (xserver-xorg-video-ati) X.Org driver for ATI. With fglrx  it is worse, I just see at the bottom how the coordinates change but the crosshair won't move. Is this a known problem with the BETA?

Thank you

System Settings:

System:    Host: philipp-MS-7756 Kernel: 3.13.0-37-generic x86_64 (64 bit, gcc: 4.8.2)            Desktop: Xfce 4.11.8 (Gtk 2.24.23) Distro: Linux Mint 17.1 RebeccaMachine:   Mobo: MSI model: H77MA-G43 (MS-7756) version: 1.0 Bios: American Megatrends version: V1.9 date: 10/31/2012CPU:       Quad core Intel Core i5-3350P CPU (-MCP-) cache: 6144 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 24743.2            Clock Speeds: 1: 1600.00 MHz 2: 1600.00 MHz 3: 1600.00 MHz 4: 1600.00 MHzGraphics:  Card: Advanced Micro Devices [AMD/ATI] Cayman PRO [Radeon HD 6950] bus-ID: 01:00.0            X.Org: 1.15.1 drivers: ati,fglrx (unloaded: fbdev,vesa,radeon) Resolution: 2560x1080@60.0hz            GLX Renderer: AMD Radeon HD 6900 Series GLX Version: 4.3.12798 - CPC 13.35.1005 Direct Rendering: YesAudio:     Card-1: Advanced Micro Devices [AMD/ATI] Cayman/Antilles HDMI Audio [Radeon HD 6900 Series] driver: snd_hda_intel bus-ID: 01:00.1           Card-2: Creative Labs EMU20k2 [X-Fi Titanium Series] driver: snd_ctxfi bus-ID: 04:00.0           Card-3: Intel 7 Series/C210 Series Chipset Family High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0           Sound: Advanced Linux Sound Architecture ver: k3.13.0-37-genericNetwork:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller            driver: r8169 ver: 2.3LK-NAPI port: d000 bus-ID: 03:00.0           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: Drives:    HDD Total Size: 878.2GB (1.6% used) 1: id: /dev/sda model: PLEXTOR_PX size: 128.0GB            2: id: /dev/sdb model: SAMSUNG_HD502IJ size: 500.1GB 3: id: /dev/sdc model: SAMSUNG_HD250HJ size: 250.1GB Partition: ID: / size: 102G used: 13G (14%) fs: ext4 RAID:      No RAID devices detected - /proc/mdstat and md_mod kernel raid module presentSensors:   System Temperatures: cpu: 29.8C mobo: 27.8C            Fan Speeds (in rpm): cpu: N/A Info:      Processes: 191 Uptime: 3 min Memory: 1220.0/15994.5MB Runlevel: 2 Gcc sys: 4.8.2 Client: Shell inxi: 1.8.4