Steps to reproduce the issue

Create a cache object using JCache::getInstance(), for eg.;

$options = array(
'defaultgroup' => 'custom_group',
'checkTime' => TRUE,
'caching' => 1,

'application' => 'site',
'language' => 'en-GB',
'lifetime' => 60 * 60 * 60
);

$cache = JCache::getInstance($options);

Set cache handler to CacheLite in Global Configurations.

Expected result

The options passed to the Cache object constructor should overwrite the options in Global Configurations. For instance if caching is off then caching should still work because caching is set to 1 in the options.

Actual result

Options passed to the Constructor are widely ignored. If caching is turned off in Global Configurations then no caching occurs. If it is turned on then the lifetime in Global Configurations is used.

I can get it to work by setting:
$cache->setCaching(1);
$cache->setLifeTime(60 * 60 * 60);

But then checkTime is ignored and cache is created every time instead of using the existing cache.

If caching is turned on in Global Configurations then everything works as expected.

System information (as much as possible)

Windows 7
Joomla 3.6.6
PHP 5.4.34
Chrome

Additional comments